Senior Staff Engineer, AI Core

About The Role

At Nu, the AI Private Banker is our intelligent financial partner that helps millions of customers understand their finances, make confident decisions, and take action seamlessly. As a Staff Software Engineer on this team, you'll define the technical architecture that powers conversational AI, recommendation engines, and personalized financial experiences across mobile and web. You'll own the full stack from Flutter mobile apps that reach millions of users to distributed backend systems that process real-time recommendations and conversational AI interactions. This isn't just about building features; it's about creating the engineering foundation that makes financial empowerment accessible at scale. Here, every technical decision you make directly impacts how millions of people experience financial guidance. You'll work at the intersection of banking and frontier AI, building systems that are both innovative and reliable.

Required

• Experience as a Sr. Staff/Staff Engineer shipping complex, large-scale consumer-facing mobile applications.
• Strong track record of designing, building, and operating high-throughput, fault-tolerant backend services using microservices architecture and event-driven design.
• Proven ability to take complete technical ownership of a major product area, making informed trade-offs on architecture and implementation.
• Experience working with data systems, APIs, and pipelines necessary to power AI/ML outputs within user interfaces.
• Track record of leading technical initiatives and mentoring other engineers on architecture, performance, and operational excellence.

Nice to have

• Experience in the FinTech or highly regulated industry.
• Familiarity with cloud-native development (AWS).
• Experience building conversational AI interfaces or recommendation systems.
• Experience scaling mobile applications across multiple global markets.

Benefits

• Top Tier Medical Insurance
• Top Tier Dental and Vision Insurance
• 20 days off, 14 company holidays, and a great culture that emphasizes work-life balance.
• Life Insurance and AD&D
• Extended maternity and paternity leaves

Lifestyle

• Nucleo - Our learning platform of courses
• NuLanguage - Our language learning program
• NuCare - Our mental health and wellness assistance program
• 401K - Saving Plans - Health Saving Account and Flexible Spending Account

Compensation

Total compensation includes base salary, RSUs, and benefits. Base salary: $345k+ annually.

Work Model

Hybrid 2-3 times/week: Our hybrid work model brings us to the office at least twice a week, on strategic days designed to maximize team connection and collaboration. For more details, visit https://building.nubank.com/nu-hybrid-work-model/.